the rear tailgate window will not operate, only at times do i need new motor or on 2001 Toyota Sequoia

t he rear tailgate window will only work very occasionally do i need a new motor or is there some else i could try first. Second question same vehicle all the indicator lights work on gear shift except for the ;light for Drive, can i just replace a bulb? and if so how difficult?

Asked by for the 2001 Toyota Sequoia
check the regulator first before buying parts, now in colder weather the motor works hard if cables and rails need grease...try in youtube replacing bulb.